What is SMILE Eye Surgery?

SMILE Eye Surgery in India

A patient steps under a laser, looks at a dim green light, and feels brief pressure on the eye. Twenty-odd seconds later the laser has finished. A few minutes after that, a thin disc of corneal tissue is slipped out through a two-millimetre opening. The patient sits up, blinks, and can usually already see the clock across the room.

That is SMILE eye surgery at ground level. The acronym stands for Small Incision Lenticule Extraction. It is a flapless, minimally invasive refractive surgery that uses a femtosecond laser to create a thin, lens-shaped disc of corneal tissue (a lenticule) within the cornea. The surgeon then removes this lenticule through a small side incision of two to four millimetres. Because no flap is created, the biomechanical integrity of the cornea stays closer to its natural state, and the corneal nerves are disturbed far less than in flap-based LASIK.

At Vasan Eye Care, SMILE eye surgery is offered for correcting myopia and myopic astigmatism. The procedure is performed on an established femtosecond platform and is particularly valued by patients who are active in sports, defence services, or occupations involving dusty or high-impact environments, where the absence of a flap is a long-term structural advantage.

SMILE has become a widely performed refractive surgery in India since its introduction, with leading refractive centres adopting the technology for eligible patients. Indian clinical experience has consistently tracked with published international data: high rates of spectacle independence for myopia and myopic astigmatism within approved treatment ranges, and a side effect profile that is generally milder than flap-based LASIK.

Indian ophthalmologists apply rigorous selection criteria aligned with All India Ophthalmological Society recommendations. Suitable candidates have stable refractive error for at least one year, adequate corneal thickness, healthy tear film, and no signs of ectatic corneal disease on tomography. The procedure is approved for defined ranges of myopia and myopic astigmatism. Hyperopia is addressed with other refractive techniques, because SMILE’s current indication does not extend to correcting long-sightedness.

Types of SMILE and Related Techniques

Several lenticule extraction platforms are available in India. SMILE sits within this broader family:

How SMILE Works

The femtosecond laser delivers precisely focused pulses inside the corneal stroma to define the anterior and posterior surfaces of the lenticule, along with a small side incision. The lenticule represents exactly the volume of corneal tissue that has to be removed to achieve the desired refractive correction. The surgeon separates the lenticule from surrounding tissue using a fine dissector introduced through the side incision and then extracts it in a single piece.

The cornea now has a new curvature, which corrects the refractive error. Because the bulk of the cornea above the treatment zone remains intact, structural stability is preserved far better than with a flap-based approach. No excimer laser is used. No tissue is ablated. Nothing is lifted. It is minimalist refractive surgery, and that minimalism is its main design advantage.

When Is SMILE Eye Surgery Indicated?

SMILE may be suitable for patients who depend on spectacles or contact lenses for distance vision and want to reduce or eliminate that dependence. Typical indications:

• Stable myopia and myopic astigmatism within approved ranges
• Contact lens intolerance
• Occupational requirements: defence services, pilot duties, competitive sports, dust-prone industrial environments
• Preference for a flapless procedure

A comprehensive evaluation confirms suitability and rules out conditions like keratoconus, very thin corneas, or significant dry eye disease that would make any laser refractive surgery inadvisable.

SMILE Eye Surgery: Step-by-Step Procedure

1. Detailed pre-operative evaluation: refraction, topography, tomography, pachymetry, tear film assessment.
2. Treatment plan generated and loaded onto the femtosecond platform.
3. On the day of surgery: anaesthetic drops instilled, eye prepared with antiseptic.
4. Docking interface applied to stabilise the eye.
5. Femtosecond laser creates the lenticule and small incision in under 30 seconds per eye.
6. The surgeon separates and extracts the lenticule through the side incision.
7. Cornea irrigated gently; antibiotic drops instilled.
8. The patient rests briefly, discharged the same day.
9. Follow-ups at day one, one week, one month, three months.

How Much Does SMILE Eye Surgery Cost in India?

Final pricing is confirmed after evaluation.

Post-Surgery Care and Recovery

What to Expect After SMILE Eye Surgery?

Most patients notice clearer vision within 24 hours, with further improvement over the first week. Mild tearing, grittiness, and sensitivity to light are common early symptoms that settle quickly. Dry eye symptoms, if they occur, are generally milder and shorter-lived than with flap-based LASIK. Quality of vision usually stabilises within one to three months. Some patients describe their vision as better than they had with glasses, particularly in contrast sensitivity and low-light clarity, though individual results vary.

Post-Operative Care Tips

• Use prescribed antibiotic and lubricating drops on schedule.
• Do not rub the eyes, particularly in the first two weeks.
• Keep water out of the eyes for at least one week.
• Avoid swimming and saunas for four weeks.
• Delay eye make-up for two weeks.
• Screen work can resume in a few days with frequent lubrication and deliberate blinking.
• Avoid contact sports and dusty activities for a month.
• Follow-up at day one, one week, one month, and three months catches issues early.

References

• American Academy of Ophthalmology. Lenticule Extraction Clinical Statement.
• Sekundo W et al. Small Incision Lenticule Extraction: Review and Outcomes.
• Zeiss Meditec. VisuMax / VisuMax 800 Technical Documentation.
• All India Ophthalmological Society. Refractive Surgery Guidelines.
• Indian Journal of Ophthalmology. SMILE in Indian Eyes: Clinical Experience.